Yuttana Khaehanchanpong และผู้แต่งคนอื่นๆ. (2011) Design and Development of a Pneumatic Harvesting Tool for Oil Palm (Elaeis guineensis Jacq.). <i>Thai Agricultural Research Journal</i>, <i>29</i>(1), 12-20.Yuttana Khaehanchanpong และผู้แต่งคนอื่นๆ. "Design and Development of a Pneumatic Harvesting Tool for Oil Palm (Elaeis guineensis Jacq.)". Thai Agricultural Research Journal 29 (2011):12-20.Yuttana Khaehanchanpong และผู้แต่งคนอื่นๆ. Design and Development of a Pneumatic Harvesting Tool for Oil Palm (Elaeis guineensis Jacq.). Department of Agriculture:ม.ป.ท. 2011.